Street sweeper



Patented Apr. 24, 1923.

MOSES D STATES VOLNEY LIDDELL, OI HARVEY., ILLINOIS, ASSIGNOR TO AUSTIN IEANUFAC- TUBING' CO., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

,STREET swnnrnn.

Application filed January 24, 192,0.` serial Ng. 353,794.

1@all whom t may concern: n

Be it known that I Moses VOLNEY LID y DELL a citizen of the nited States', residing reaching such surface.`

i shaft.

at l-arvey, in the county of Cook and State oflllinois, have invented certain new and useful Improvements in Street Sweepers, of which the following is a specification. y

The present invention` relates to street sweepers, and particularly to that portion of the street sweeper which has to do with the gathering of material from an areato one side of the machine and bringing it beneath the machine where it willbefencountered .by other sweeping mechanisnn'so that the machine will be adapted to work close up to a'curb or other obstruction'which prevents the main sweeping lmechanism from The object of the invention is to provide in combination with a broom constructed for rotation about averticaliaxis, an improved mechanism for the mounting and control of such a broom. The invention is designed primarily for use in, a power-driven pick-up sweeper, but it will beobvious that theseveral features of novelty arevadapted for lother uses, and the illustrated embodiment of thefinvention is therefore not to be taken as a"`,limitation.`

, .In the accompanying drawings,

Figure l is a side elevationof the gutter sweeping attachmentconstituting the lsubject-matter. of the present' invention. f

Figure 2 is a vertical axial sectiononan enlarged scale of the suspending andfelevatingfhead of the sweepershaft. f e

Figure 3 is a vertical sectional view ofk the gear box and mounting for they sweeper The object of the presentA invention is to mount'fthe gutter sweeper of ya sweeping machine, in the form of a broom G, upon an approximately vertical shaft 1 through which rotation may be impartedy to the broom, and by which the broommay be raised'from the surface when not in use, or lowered when required to act. The shaft l is" preferably inclined at such angle to the vertical as will develop contact with the surface by the forward outer sector kof the broom, thus causing the latter to displace the refuse forwardly and outwardly to a. Aposition beneath the machine, where it"will be left inpositionA to be yencountered by the main sweeping mechanism.

"Shaft'l is mounted kto slide in a box2 through means of which the gutter sweeper is mounted upon the frame kF of the machine; said shaft being splined in the sleeve 3 (Figure 3), which is rotatably sustained by radial bearings 4 in the .box 2, so that the shaft may be driven by saidsleeve 3 'A' while, Apermitting lit freedom of vertical movement 4in the sleeve. Sleeve 3 sustains no .material portion ofthe vertical load of the shaft l, butk is itself sustained by means of its drive gear, which comprises the bevel pinion amounted on the sleeve and the coacting pinion 6 whose horizontal shaft 7 is positioned in rradial bearings r8 and pro-r trudes 'beyond the box to receive the driving sprocket y l Bearings 4 are vertically sustained in the box 2, the upper one by shoulders 4a, and the lower one by the spanner nut 4b. Outer bearing 8 isconfined by the spanner nutv 8? and is preferably rprotected by packing 10 introduced between said nut and the bearing. f

In order to control the shaft `1 vertically, it is provided' with a supporting and lifting headll which. receives the reduced upper endla of the shaft 1- with dust packing l2 andsupportsfsaid end through the mediumk of a nutl and thrust bearing 14 interposed between thel nut land the shoulder Il of the'head. A cap l5 secured to the head 11 byscrews 16f and carrying the center screw 17 develops downward pressure. upon the shaft l to bring it under control of the head ll'in development of downward pressure of the broom. A pair of links 18 pivoted at 19 to the head and at 2O to the respective arms 2l ofa bifurcated hand lever 22 (see Figure l) form with the ends of said hand lever a rtoggle lever `connection through means of which thel shaft and its broom may be not only raised from the surface but posi` tivelyforced down upon the surface to' insure proper sweeping contact." An adjustable arresting stop 23 that receives aprojection on one of the arms 2l of ,lever 22 dete mines withy exactness the extent of depression yof the broom, and consequently its sweeping effect; and a toothed rack 25 concentric with the lever fulcrum 26 on the horn 261 of box 2 receives the locking dog 27 of the lever 22 to hold the latter in any position to which it may be adjusted. `Additional holes 20 in the links 18 afford rough change in the depression of the shaft With its broom, and these together With the line adjustment afforded by stop 23 permit the action of the broom to be controlled With exactness.

The broom preferably employed in connection with the present invention comprises asupporting disk, 38and Wisps of splints 39', with means for mounting them upon the disk` lin a manner to be conveniently re# placed and to remain securely held against angular displacement vvhile in use. Accordingly, the disk 38 is formed Withr a depending frusto-conical flange 40 affording an outer inclined face vagainst which the v visps 39 may be laid and upon which they may be secured by means of bolts 41, and an abutment lHarige 4 2 which receives the upper ends of the Wieps and secures the latter againstJ i displacement by ver-tical thrust. Bolts vcarryclamping plates 43 through Which they secure the Wisps.

I claiin: A 1. lncombination, a bearing box, a sleeve anda drive shaft mountedin saidbox, coacting bevel pinions carried, respectively, by said driveshaft and sleev e,'a driven shaft having splined sliding bearingin said sleeve, and means for, longitudinally positioning said driven shaft ycomprising a lsupporting head in which the driven shaft is suspended and awcontrolling lever having connection with said supporting head; said connection comprising an arm on said lever anda link forming with said arm a togglelever.V

2. In combination, a bearing box, a sleeve and a drive shaft mounted in said box, coacting. bevel pinions carried, respectively, by said drive shaft and sleeve, a drijven shaft having splined sliding bearing in said sleeve, means for longitudinally positioning said driven shaft comprising a supporting head invvvhich the driven shaft issuspended and a controlling lever having connection with said supporting head, and an adjustable stop forv said lever.

3. Infcombination, a bearing box, a sleeve and a drive shaft mounted in said box, coacting bevel pinions carried, respectively, by said drive shaft and sleeve, a Idriven shaft having splined sliding bearing in said sleeve, and means for longitudinally positioning said driven shaft comprising a supporting head in which the driven shaft is suspended and a controlling lever having connections With said supporting head; said connection comprising an arm on said lever and a link forming with said arm a toggle lever; and said arm having an adjustable Stop- Y a. In combination, a bearing box, a sleeve and a drive shaft mounted in said box, Coacting bevel pinions carried, respectively, by said driveshaft and sleeve, a driven shaft having splined sliding bearing in said sleeve, and means for longitudinally positioning saiddriven shaft comprisinga supporting head in Whichthe driven shaft is suspended and a controlling lever having connection kwith said supporting head; said connection said driven shaft oo mprisinga supportinol j head in vvhich the driven shaft is suspended and a. controllinglever having connection with said supporting head.; said connection comprising` an arm on saidlever and a link forming With arm a toggle lever; said arm and link being adjustably connected to vary the ythrovvof the drivenshaft.

'6. In combination, a bearing bex, a `sleeve and a ,drive shaft mounted in said box, coacting bevel lpinions carried, respeetively, by said driveshaft andjsleev'e, a., drivenslia'ft havingsplined Sliding bearing in said sleeve, and means for longitudinally positioning said di'iven. shaft 'comp-risingr a supporting head'in wvhiclnthe driven shaft is suspended and eCent.lellint-ty lever, having Comdien with Seid .Surnoftnaheeds Said Ceentee Campesina @Herm ,011 Sadlever and a liek termine with Seid., erm @toggle ,lever ;y Said arm and link ,l being adjustably connected to Yary'ithe, threw Qfhe driven Sheftaend Said arm being providedlvvith an adjustable stop to further vary said throvv.

.7Theacembinat0n of@ :driven shaft, a headforrsteining Said Shaft, 2 thrust bearing in said head upon tvliiclrsaid shaft is Suspended, and means-independent of4 Seid thrust bearingfor imparting movement to said head in the direction of the axis of said -v l. ,i ii.

A he combination of a rotary shaf t, a box in Whichsaid shaft is mounted with freedom of longitudinal movement, and means for :sustaining and positioning4 the shaftI longitudinally without restricting its rotation; said means comprising a head mounted 1112011. and Pertekngf the longitudinal movements of the shaft, a setscrenv carried by said head and bearing coaxially upon the shaft and transmitting thrust from the head to the, lshaft ino'ne axial direction,

and a rotary bearing carried by the head, surrounding the shaft, and moving andsustaining the latter in the direction opposite to that of said thrust; the set screw being shaft upon said thrust bearing, and means adjustable relatively to the bearing. for impartingmovement to said head in the 9. The combination of a driven shaft7 a direction of the axis of said shaft. 10 head for sustaining said shaft, a thrust bear- Signed at Chicago, Illinois, this 20th day 5 ing in Said head upon which said shaft is of January, 1920.

suspended, a cap covering said thrust bearing and carrying a set screw pressing said MOSES VOLNEY LIDDELL. 

